Combined control for purifying, selecting, sorting, and like drums



llatented Aug. 3, 19295.

unirse stares isaiasi?.

narrar ries- COMBINED CONTROL FOR URlVFYING, SELETING, SORTING, VANI) LIKE DRUMS.

Application filed July 15, 1925, Serial No. SSfand in France August 8, 1924..

rhe present invention relates to the construction of combined drives 'for the opera tion ci purifying` selecting, sorting` `and like drums.

it is an observed fact that purifying` drums essentially consist of a suitably perforated metallic cylinder which is traversed by a current or' waterMcentriugal or centripetal-withdrawing the fibres or llike sub- 1o stances in suspension, said cylinder ordi-um being' rapidly rotated and alsosubjected to a suiliciently rapid shaking.

rl`his double movement has hitherto been obtained either b riO'id mechanical drives le which occasion a considerable noise, and the app ratus is rapidly put out oi order, or by the flexible drive according to the patent to Marcel Lemert No. 850,021, April 9th, 190i entitled: Means for controlling the pulp 2.o strainer drums of paper making machines, which drive eliminates the noise and obviates all prejudice to the apparatus, while affording a number of revolutions which is proportional to the number of shocks or osciilations.

The present invention relates to a new drive which utilizes the ladvantages or' the drive set forth in the aforesaid patent, and which further ensures of oscillations and the loading of the machine, and wherein the transfer may be made from the said Lamort flexible drive to the ordinary rigid drive.

Our said drive is essentially characterized in that the belt providing` for the oscillations, as set forth in the aforesaid Patent No. 850,021, herein acts not directly upon theiianged end or neck of the purifying'Y drum, but upon an intermediate element, which may be either coupled to the said neck .4o of the drum or uncoupled and made loose, the said neck further comprisinga rigid driving,` member such as a pulley, gear wheel or the like. In this manner the machine may employ the two drives concurrently, or the transfer may be made from one drive to the other according to needs.

Obviously, we may employ various embodiments or' the said invention. An embodiment possessing' particular advantages is 5U herein set iorth by way of example with reference to the appended drawings.

Fig. 1 is an end elevation ot our said apparatus, and Fig. 2 a corresponding view in side elevation, partially in section on the main center line.

In the same manner as for the known 'ring to the belt l.

types oi machine,the purifying drum which i is shown in the dra-wings comprises a suitably pertorated cylinder 1 having' at one end the hanged portion .or neckr2; within the said cylinder is mounted the plate 3 upon which are caused to fall the impurities and like substances to be eliminated. The apparatus comprises'all the usual accessory elements such as the feedingr conduit il, the

`scraper 5- for detaching the impurities andV the like from the inner wall of the drum, the vessel 6 for collecting the water charged with iibres and purified material, and the like.

The flexible drive is effected in conformity to the aforesaid patent by means of a beit 'i' which is attached at one end to a rod 8 which is stationary when the machine is running but is adjustable in position, and at the other end to a lever 9 which is given a reciprocating,` motion by any suitable means, for instance a connecting rod 10 and a crank.

The belt 7, instead oi passing` directly around the flanged portion 2, passes .over an intermediate ring 11 which may be secured to the said flanged portion by the screws 12 or by like means. The said flanged portion has also secured thereto in an ade-y quate manner the grooved pulley 13 serving for the ordinary drive by the belt trapezoidal section 1li. The said pulley is driven from the main shaft 16 by means of the pulley 15 and a suitable supporting pulley or the like.

When the machine is to be operated upon the flexible drive, as set forth in Patent No. 850,021 it will suilice to slip oil' the belt 11i and to connect the intermediate ring 11 with the flanged portion 2. ln this case the drum is actuated not only `with an oscillating1 movement, but also with a slight rotary movement, as a. result or the sticking ofthe @n the contrary, to change over to the ordinary drive, for instance by reason oi' irregularities due to an overload on the machine. VJe disengage the ring 11 by releasing` the screws 12, and then place the belt 11i in position. l/Vhen it is desired to operate by the flexible drive, while at the same time being,` assured that the speed of lrotation will in no case descend below the speed of the ordinary drive, or that it will not exceed a maximum rate, the intermediate ring 11 is left in position and the belt 14 in its place, so Vthat the two drives will be simultaneously in operation.

Having now particularly described our ,ineans includinggfa` Idrive yHarige on the druin,`

said invention and tlie ,manner inWliicli tlie saine is to be performed, .We declare that what We claim is: Y l. Control device for `purifying drums for paper manufacture andthe like, comprising, in combination, a diunrinounted for rotation, usualdrive means for tlie druin, a leX- ible drivevfoigthe drumVand means to uncouple the iieXible drive from tlie drum.

Conti'olgdevice'i'or l.puiiiffying drums for ,papei-inanufacture andlthe like, comprising, win combiinatiomja vdrum amounted -for rotation, usual drive iiieansifor. tlie drum, a.

llexible drive for tliefdrunnand ineansfor reducinglthe .elect oftlieiieigible drivev at the moment of oscillation,- Yoit the drum.

Controldevioe.y for; purifying y.drums for i paper manufactureiand the like, comprising, in coinbinzjition, a drum mounted for .rotation, usual -drive 4.means yfor .the idrum, a

Aflexible .drive foi' the-drum, the` uncoupling va ring carriedby tlie langevforreceiving tlie flexible drive, and means on tlie ring for re- 'leasably fixing the ring oiitliefflange.

4;. Control device for purifying drums for paper inanufactureand the like, comprising, in combination, a drum mounted `:for rotation, usual `drive ineansfor the dr.uin,` a Hexible drive for the drum, the uncoupling .means including, (a dr-iveflange on tlie drum,

a ring carried by tlie flange for receiving `.theilexiblegdrive, andscrew ineanson the :ring :for-releasablyxing the ring` on the flange. i

5. Control device for purifying drums for 1 paper manufacture and the like,fcomprising, .in combination, va drum mounted -for rota- 

